Control for an electric motor-driven telescoping radio antenna

Abstract

A vehicle radio antenna control wherein the extension of the antenna is controlled by the radio on-off switch and the vehicle ignition switch in series, and the retraction of the antenna is controlled by a switch which is actuated in response to the manipulation of a mechanism which protects the vehicle from unauthorized entry, such as a door lock, when either or both ignition switch and radio on-off switch are in the off position.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 
     
       1. Electric control for an electric motor driven radio antenna for use in a vehicle having a selectively actuatable mechanism for protecting the vehicle from unauthorized entry, said control comprising electric motor control means for directing electric power to the electric motor to move said antenna to an extended or retracted position, vehicle ignition switch means and a radio control switch means in electrical series relation for conditioning said electric motor control means to energize said electric motor to extend said antenna only when both switch means are conditioned to be electrically conductive; and retraction switch means automatically operable by said selectively actuatable mechanism to energize said electric motor, through said electric motor control means, to retract said antenna only when said selectively actuatable mechanism is operated to protect the vehicle and either or both of said vehicle ignition switch means or said radio control switch means are conditioned to be electrically nonconductive.